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"April 22, 1924. 1,491,043

l A. G. ILLCH ATTACHMENT HOOK FOR SAFETY BELTS Filed March 7' 1922 2 'Sheets-Sheet 1 u u a Ilz i E' V 1 m 012 a t,

April 22 1924. 1,491,043

A. G. ILLCH ATTACHMENT HOOK FOR SAFETY BELTS Filed March '7, 1922 2 Sheets-Sheet 2 mvjz Ill 671/ Patented Apr. 22, 1924.

, UNITED STATES AMSON G. ILLCH, F NEW YORK, N. Y.

ATTACHMENT HOOK FOR SAFETY BELTS.

Application tiled March 7, 1922. Serial No. 541,680.

Y T0 all who/m, t may concern:

Be it known-that I, AMscN G. ILLCH, citi- Zen of the United States, and residentof New York, in the county of New York and 'State of New York, have invented certain new and useful Improvements in an Attachment Hook for Safety Belts, of which the followingis a specification. f

This invention relates to improvements in attachment hooks for` safety belts which is secured to a window frame or casing and provides a means to which the safety belt, worn by a window cleaner, may be attached.

This invention is in the nature of an improvement over an attachment hook set forth in PatentfNumber 1,374C,7 38, issued to me on April 12, 1921. y

The object of this invention is to provide an attachment hook or bolt of the character described which is applicable to a hollow window casing and particularly for attachment to the mullion of a window casing.

.An object of .this invention is to provide a device` of the character described which may be readily `and securely attached to a windowy casing at a predetermined height or positioncupon same. f

A further object of this invention is to provide a device as described which will eliminate the necessity of field work to position or locate thedevice.

Theseobjectsare attained by means of the device illustrated in the accompanying drawings and set forth in the specification and claims.

Figure 1 is a side view of one of the elements which form one part of this invention.

Figure 2 is a front view of same.

Figure 3 is a front view of another part of this invention.

Figure 4 is a side view of same.

Figure 5 is a view in section of a part of a stad member or mullion of a window.

Figure 6 is a view in perspective of the two parts as connected and secured together after they are positioned upon the window casing. y

Figure 7 is a section through the assembled device showing the same in place upon the window casing.

Figure 8 is a perspective view showing the parts about to be assembled upon the window casing but shows a slightly modified form which will be hereinafter fully described.

VFigures 9, 10 and 11 are sectional views showing modified forms which will be hereinafter described.

Figure 12is a fragmentary View in perspective showing a modified form wherein a simplified locking means is provided.

- Figure 13 is a sectional view through the line 13-13 of'Figure 12, but shows the lugs before they are folded or hammered in place.

Figure 14 is a similar sectional view buty shows the lugs bent into place.

Referring in detail to the parts, 1, is an attachment member having an elongated and offset tongue 2, which is adapted to engage through the perforation 7, ina window casing 4. 5, designates a complementary attachment member having an elongated and offset tongue 6, which is adapted to engage through the perforation 3, in the said window casing. Integrally formed upon the member 5, is an attachment hook 8, whichY is provided as a means for attaching the safety hook of a window cleaners belt when the device is fixed upon-the window casing as shown in Figure 7. A

A lip 9, is formed upon the member 1, to provide a locking groove 10, in which the end 11, of the member 5, is engaged to securely lock 1 and 5, together. As a means of security and to prevent the displacement` of members 1, and 5, with respect to one another, there is provided locking screws 12,v which engage freely through the perforations 13, in the member 5, and into kthreads of the perforations 14, in member 1.

Inpractice, the window frames are perforatedat the shop and are set in place during the constructional operations. The attachment hook is applied by slipping the tongue 2, of the member 1, through one of the perforations and the tongue 6, of the member 5, through the other perforation, as clearly shown in Figure 8, and then Ibring-y ing the two parts together so that the end 11, engages into the groove 10, after which the screws 12, are applied to lock the parts together.

A slight modification is shown in Figure 8, wherein a locking groove 15, is provided and the engaging end of the member 5, is cut away as at 16, to engage under the lip 17.

Another modification is shown in Figure 9, wherein the locking groove is eliminated and a pin 18, formed upon the member 5, and engaging in a perforation 19, upon the member 1, serves as a locking means.

Still another modification .is shown in Figure 10, wherein the attachment hook 8, is formed upon a plate 20, and which plate is provided with jaws 21, adapted to engage through perforations 22, formed in the window casing 4. Locking screws 23, having tapered ends 24, are threaded through the plate 20, and engage within the perforations against the backs of the jaws 21, and prevent the -dislodgment of same after attachment.

One or more attachment hooks may be provided in my device to meet requirements. Figure 11, shows a modified form, wherein two attachment hooks Sa and S, are provided `one of which 8a is integrally formed upon the plate 5, while kthe other hook 8b, is integrally formed upon the plate 1, and a single locking screw 12, is provided.

The locking yscrews may be omitted, in which case locking means may be provided as 'shown in Figures 12, 13 and 14.

In this `modiiied form a lug .25, is formed upon the member 1, and a similar flug 26, is formed upon the member 5. These lugs are adapted to be bent upwardly and downwardly `against the edges of their respective adjacent plates las shown in Figures 12 and 14. Before the :members are locked together said lugs 25` and .26, extend laterally from the plates 1 and 5, respectively as shown in Figure 18. Itis obvious that other means of a similar nature may be employed to lock members 1 and 5, together without the means lof locking screws h'ereinbefore described` 1What is claimed V 1. In a structural member, the combination with a window casing lhaving perforations vformed therein, .interlocking attachment members adapted to engage through said erforations, a means formed upon said inter ocking members for guiding 'and positioning lsame in their locked position; means for securely holding said interlocking members in a locked position, and an attachment hook formed upon one of the interlocking members. Y

2. The device 'of claim 1, wherein tongues are provided upon the interlocking attachment members which are adapted to engage through said perforations in casing lor holding same upon said casing when the members are locked together.

3. The device ol claim 1, wherein the locking members are complementary and provided with a stopping member to limit thc movement of the said interlocking members in one direction.

4. The device of claim 1, wherein 'set screws are provided upon the holding means to hold the said interlocking members against displacement or removal when same are secured permanently in position.

5. In combination with a window casing having perforations at a predetermined position therein, complementary and interlocking attachment members having tongues formed thereon which are ladapted to 'engage through said perforations in the window casing, locking screws adapted vto engage through the complementary members to h'old same secu-rely together and .maintain4 'the tongues permanently in engagement with said window casing fand attachment lhooks formed upon the kinterlocking members, 'said attachment hooks being provided 'as v'a means for attachment for safety belts.

Signed at New York, in the county of New York, and State of New York, this 12th day of November, A. D. 1921.

AMSON G. ILLCH. 

